3 Three rectangular blocks are each 10 cm long.
They are arranged symmetrically in this way.
10 cm
Not drawn
accurately
overlap
overlap
x
24 cm
The whole arrangement is 24 cm long.
Work out the length of an overlap
[3 marks]

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950